Hello guys,
I thought the topic might keep some of you from hitting the delete key>  
I wrote a little python script to check the swr of the antenna connected 
to my TS-570DG.  
All you do is execute the script passing the starting and ending 
frequencies and an optional frequency step.  The program saves your 
frequency, power level, mode and antenna-tuner setting and restores them 
after performing the measurements.  Measurements are done using AM mode 
with 5 watts power.
No, it's not as good as the MFJ-209, but it give you a rough idea of 
your antenna resonance point.  Below is a sample output from the script.

Script started on Thu Dec 28 16:05:15 2006
python swr.py --from 3500 --to 3600 --step 10
freq swr
3500 4
3510 4
3520 3
3530 2
3540 1
3550 1
3560 1
3570 1
3580 2
3590 3
frequency 03551
mode CW
power 100 watts
Script done on Thu Dec 28 16:06:34 2006
 
73 Chris w1gm